Marketplace · API · x402

anywaypossible.com/api/payment-guard

Verify an x402 purchase before an AI agent signs. Validate the live HTTP 402 challenge, Base network, USDC asset, quoted price, recipient, price ceiling, buyer funding, optional gas reserve, and destination hazards, then receive a machine-readable safe-to-sign, fund, review, or reject decision. No account or API key.

Endpoint	`https://anywaypossible.com/api/payment-guard`
Trust	100% uptime over 1 checks · ~1400 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xe5690D37805107C56f6195E65A262b234E0E5e75
method	POST
last updated	2026-10-21T07:02:42.023Z

Use it

Call it (an x402 client pays automatically)

curl -i https://anywaypossible.com/api/payment-guard
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-75ba6f9a875e67be

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}